Gas Chromatography
Analytically clean, leak-free GC flow control—built for long-life reliability, repeatable separations, and maximum uptime.
In gas chromatography applications, it is essential to keep lines free of impurities. Clean gases are critical to achieving accuracy when analyzing low-concentration components in samples. Leaks will permit impurities in the system’s ambient air to contaminate the samples.
Value Beyond Understanding
The quality of the gas chromatography (GC) instrument’s valves is an important contributor to its accuracy and repeatability.
- Purity standards are high and many GC rotary valves do not prevent contamination ¬ making the testing process difficult and lengthy
- Leak-tight systems are critical to ensure the integrity of the analysis, particularly for high-purity applications.
- When identifying trace impurities in a gas, the chromatography system’s valves must allow the lowest detection limit possible.
- To ensure sample integrity, the valve must have low outgassing and should not react or create another byproduct.
- An AFP valve with purge features is critical to prevent any inboard contamination. Most valves require an additional piece of purging equipment that sits outside the valve. This arrangement can be bulky and inaccurate due to contamination risks.
AFP valves are ideal for gas chromatography analysis in air separation, environmental, oil and gas, and semiconductor applications.
